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An algorithm for image processing is proposed. The proposed algorithm, which can be viewed as a quantum-classical hybrid algorithm, can transform a low-resolution bitonal image of a character from the set of alphanumeric characters (A-Z,…

量子物理 · 物理学 2022-12-27 Ankur Pal , Abhishek Shukla , Anirban Pathak

In this paper we present an OCR for Handwritten Devnagari Characters. Basic symbols are recognized by neural classifier. We have used four feature extraction techniques namely, intersection, shadow feature, chain code histogram and straight…

计算机视觉与模式识别 · 计算机科学 2010-07-01 Sandhya Arora , Debotosh Bhattacharjee , Mita Nasipuri , Dipak Kumar Basu , Mahantapas Kundu

Automatic character generation is an appealing solution for new typeface design, especially for Chinese typefaces including over 3700 most commonly-used characters. This task has two main pain points: (i) handwritten characters are usually…

计算机视觉与模式识别 · 计算机科学 2019-05-07 Chuan Wen , Jie Chang , Ya Zhang , Siheng Chen , Yanfeng Wang , Mei Han , Qi Tian

There are more than 80,000 character categories in Chinese while most of them are rarely used. To build a high performance handwritten Chinese character recognition (HCCR) system supporting the full character set with a traditional…

计算机视觉与模式识别 · 计算机科学 2023-05-26 Dongnan Gui , Kai Chen , Haisong Ding , Qiang Huo

Recognition of ancient Tamil characters has always been a challenge for epigraphers. This is primarily because the language has evolved over the several centuries and the character set over this time has both expanded and diversified. This…

计算机视觉与模式识别 · 计算机科学 2019-07-12 Lalitha Giridhar , Aishwarya Dharani and , Velmathi Guruviah

The inherent complexities of Arabic script; its cursive nature, diacritical marks (tashkeel), and varied typography, pose persistent challenges for Optical Character Recognition (OCR). We present Qari-OCR, a series of vision-language models…

计算机视觉与模式识别 · 计算机科学 2025-06-04 Ahmed Wasfy , Omer Nacar , Abdelakreem Elkhateb , Mahmoud Reda , Omar Elshehy , Adel Ammar , Wadii Boulila

Recently, great progress has been made for online handwritten Chinese character recognition due to the emergence of deep learning techniques. However, previous research mostly treated each Chinese character as one class without explicitly…

计算机视觉与模式识别 · 计算机科学 2018-01-31 Jianshu Zhang , Yixing Zhu , Jun Du , Lirong Dai

Optical character recognition (OCR) is crucial for a deeper access to historical collections. OCR needs to account for orthographic variations, typefaces, or language evolution (i.e., new letters, word spellings), as the main source of…

计算与语言 · 计算机科学 2021-02-02 Lijun Lyu , Maria Koutraki , Martin Krickl , Besnik Fetahu

OCR character segmentation for multilingual printed documents is difficult due to the diversity of different linguistic characters. Previous approaches mainly focus on monolingual texts and are not suitable for multilingual-lingual cases.…

计算机视觉与模式识别 · 计算机科学 2016-11-17 Huabin Zheng , Jingyu Wang , Zhengjie Huang , Yang Yang , Rong Pan

Contrary to popular belief, Optical Character Recognition (OCR) remains a challenging problem when text occurs in unconstrained environments, like natural scenes, due to geometrical distortions, complex backgrounds, and diverse fonts. In…

计算机视觉与模式识别 · 计算机科学 2019-06-06 Marcin Namysl , Iuliu Konya

Existing optical character recognition (OCR) methods rely on task-specific designs with divergent paradigms, architectures, and training strategies, which significantly increases the complexity of research and maintenance and hinders the…

计算机视觉与模式识别 · 计算机科学 2026-05-27 Dezhi Peng , Zhenhua Yang , Jiaxin Zhang , Chongyu Liu , Yongxin Shi , Kai Ding , Fengjun Guo , Lianwen Jin

Kurdish libraries have many historical publications that were printed back in the early days when printing devices were brought to Kurdistan. Having a good Optical Character Recognition (OCR) to help process these publications and…

计算与语言 · 计算机科学 2024-04-10 Blnd Yaseen , Hossein Hassani

This study investigates the potential of Large Language Models (LLMs), particularly GPT-4o, for Optical Character Recognition (OCR) in low-resource scripts such as Urdu, Albanian, and Tajik, with English serving as a benchmark. Using a…

机器学习 · 计算机科学 2024-12-23 Muhammad Abdullah Sohail , Salaar Masood , Hamza Iqbal

Traditional OCR systems (OCR-1.0) are increasingly unable to meet people's usage due to the growing demand for intelligent processing of man-made optical characters. In this paper, we collectively refer to all artificial optical signals…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Haoran Wei , Chenglong Liu , Jinyue Chen , Jia Wang , Lingyu Kong , Yanming Xu , Zheng Ge , Liang Zhao , Jianjian Sun , Yuang Peng , Chunrui Han , Xiangyu Zhang

In this paper, we propose a novel method based on character sequence-to-sequence models to correct documents already processed with Optical Character Recognition (OCR) systems. The main contribution of this paper is a set of strategies to…

计算与语言 · 计算机科学 2022-01-26 Juan Ramirez-Orta , Eduardo Xamena , Ana Maguitman , Evangelos Milios , Axel J. Soto

Multi-stroke characters in scripts such as Chinese and Japanese can be highly complex, posing significant challenges for both native speakers and, especially, non-native learners. If these characters can be simplified without degrading…

计算机视觉与模式识别 · 计算机科学 2025-07-01 Ryo Ishiyama , Shinnosuke Matsuo , Seiichi Uchida

This paper is a presentation of a new method for denoising images using Haralick features and further segmenting the characters using artificial neural networks. The image is divided into kernels, each of which is converted to a GLCM (Gray…

计算机视觉与模式识别 · 计算机科学 2021-07-27 P Preethi , Hrishikesh Viswanath

Hangeul was created as a phonetic alphabet and is known to have the best 1:1 correspondence between letters and pronunciation among existing alphabets. In this paper, we examine the possibility of modifying the basic form of Hangeul and…

计算与语言 · 计算机科学 2024-12-24 Wonchan Kim , Michelle Meehyun Kim

Phonetic Cloaking Replacement (PCR), defined as the deliberate use of homophonic or near-homophonic variants to hide toxic intent, has become a major obstacle to Chinese content moderation. While this problem is well-recognized, existing…

计算与语言 · 计算机科学 2025-07-11 Haotan Guo , Jianfei He , Jiayuan Ma , Hongbin Na , Zimu Wang , Haiyang Zhang , Qi Chen , Wei Wang , Zijing Shi , Tao Shen , Ling Chen

Handwriting literacy is an important skill for learning and communication in school-age children. In the digital age, handwriting has been largely replaced by typing, leading to a decline in handwriting proficiency, particularly in…

定量方法 · 定量生物学 2026-02-03 Zebo Xu , Steven Langsford , Zhuang Qiu , Zhenguang Cai